→ Pay attention
→ Top rated
| # | User | Rating |
|---|---|---|
| 1 | jiangly | 4039 |
| 2 | tourist | 3841 |
| 3 | jqdai0815 | 3682 |
| 4 | ksun48 | 3590 |
| 5 | ecnerwala | 3542 |
| 6 | Benq | 3535 |
| 7 | orzdevinwang | 3526 |
| 8 | gamegame | 3477 |
| 9 | heuristica | 3357 |
| 10 | Radewoosh | 3355 |
→ Top contributors
| # | User | Contrib. |
|---|---|---|
| 1 | cry | 168 |
| 2 | -is-this-fft- | 165 |
| 3 | atcoder_official | 160 |
| 3 | Um_nik | 160 |
| 5 | djm03178 | 158 |
| 6 | Dominater069 | 156 |
| 7 | adamant | 153 |
| 8 | luogu_official | 152 |
| 9 | awoo | 151 |
| 10 | TheScrasse | 147 |
→ Find user
→ Recent actions
Codeforces (c) Copyright 2010-2025 Mike Mirzayanov
The only programming contests Web 2.0 platform
Server time: Jan/23/2025 01:03:22 (f1).
Desktop version, switch to mobile version.
Supported by
Try test
You can use binary search and dsu to solve this problem:
1) Use binary search for finding the maximum speed of Mary can drive O(logN).
2) Use dsu if Mary can reach to her grandmother if she drives her car to speed x O(N).
Total time complexity is O(NlogN).